A new system for fast ultrasound-tomography at marble sculptures

The authors present a new ultrasonic system for the automatic determination of tomography on stone. The tomography can be determined with up to 32 ultrasonic transducers in a variable length holding system. The positions of the sensors are determined with a magnetic field tracking or optically with Aruco markers. The signal control is done by a single channel electronic with 32x multiplexer. In this way the determination of a tomography from 32 measuring positions could be reduced to approx. 1 hour.